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JEE CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

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Which of the following represents the correct order of increasing negative electron gain enthalpy of the elements?

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Correct option: C

\mathrm{O} < \mathrm{Te} < \mathrm{Se} < \mathrm{S}

Option C is correct. Electron gain enthalpy becomes less negative down a group, but oxygen has a less negative value than sulfur due to its small size.

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